package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * @author Yanglinfengkk
 * 处理社交登录请求
 */
@Controller
@Slf4j
public class OAuth2Controller {

    @Autowired
    MemberFeignService memberFeignService;

    /**
     * 微博社交登录
     *
     * @param code 令牌
     * @return
     * @RequestParam 前端页面传过来的
     */
    @GetMapping("/oauth2.0/weibo/success")
    public String weiBo(@RequestParam("code") String code, HttpSession session, HttpServletResponse servletResponse) throws Exception {

        Map<String, String> map = new HashMap<>();
        map.put("client_id", "3848252512");
        map.put("client_secret", "59052283a20fde51a80a5264913788fe");
        map.put("grant_type", "authorization_code");
        map.put("redirect_uri", "http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code", code);
        //1.根据code换取access_token
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", new HashMap<String, String>(), null, map);

        //response.getStatusLine().getStatusCode() 获得当前的状态码
        if (response.getStatusLine().getStatusCode() == 200) {
            /**
             * 获取到了access_token
             * response.getEntity() 获取响应实体
             */
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

            //知道当前是那个社交用户
            //1).当前用户如果是第一次进网站,自动注册进来(为当前社交用户生成一个会员信息账号,以后这个社交账号就对应指定的会员)
            //登录或者注册这个社交用户
            R oauthLogin = memberFeignService.oauthLogin(socialUser);
            if (oauthLogin.getCode() == 0) {
                //提取返回的用户信息进行相关操作
                MemberRespVo data = oauthLogin.getData("data", new TypeReference<MemberRespVo>() {});
                log.info("微博用户登录成功，用户信息：{}", data);

                /**
                 * 1.第一次使用session,命令浏览器保存这个卡号,JSESSIONID这个cookie以后
                 *      浏览器访问那个网站就会带上这个网站的cookie
                 * 子域之间:   gulimall.com    auth.gulimall.com   order.gulimall.com
                 *      发卡的时候(指定域名为父域名),即使是子域系统发卡,也能让父域直接使用
                 */
                session.setAttribute("loginUser",data);
                //TODO  1.默认发的令牌,session=dsajkdjl 作用域:当前域(1.解决子域session共享问题)
                //TODO  2.使用JSON的序列化方式来序列化对象数据到redis中

                //2.登录成功跳回首页
                return "redirect:http://gulimall.com";
            } else {
                //返回登录页
                return "redirect:http://auth.gulimall.com/login.html";
            }
        } else {
            //返回登录页
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }
}
